Schoenus nigricans is a species of sedge known by the common names black bog-rushSchoenus nigricans. Online Atlas of the British and Irish Flora. Retrieved 13 June 2017.Tucker, G. C. 2017. Schoenus nigricans. The Jepson eFlora. Retrieved 13 June 2017. and black sedge.Schoenus nigricans. Flora of North America. eFloras.org. Retrieved 13 June 2017. It is native to Eurasia, parts of Africa, Australia, and southern North America, including Mexico and the southernmost United States. Description This perennial plant grows in low, tight clumps 20 to 70 centimeters tall, with threadlike leaves bearing wide, dark brown ligules. The inflorescence is a small, flattened cluster of dark spikelets. The fruit is an achene coated in a hard, white shell. Habitat S. nigricans grows in many types of wetlands and other moist and alkaline habitat, including marshes, springs, seeps, peat bogs, heath, and alkali flats.
References
External links Schoenus nigricans. CalPhotos.